As part of this change, ISO is renumbering some parts of the standard so that it can cover more topics, e.g. tactile and haptic interaction. For example, two zeros in the number indicate that the document under consideration is a generic or basic standard. Fundamental aspects are regulated in standards ending with one zero. A standard with three digits other than zero in the number regulate specific aspects.

The first part to be renumbered was part 10 (now renumbered to part 110).[3] Part 1 is a general introduction to the rest of the standard. Part 2 addresses task design for working with computer systems. Parts 3–9 deal with physical characteristics of computer equipment. Parts 110 and parts 11–19 deal with usability aspects of software, including Part 110 (a general set of usability heuristics for the design of different types of dialogue) and Part 11 (general guidance on the specification and measurement of usability).

Of particular interest to the lay computer user are the definitions of flat-panel TV and monitor pixel defects provided in the ISO-9241-3xx series of standards (which renders obsolete ISO 13406-2). These identify three classes for measuring pixel defects in flat panel monitors:

Class 0 panels are completely defect-free, including no full pixel or sub-pixel defects.

Class 1 panels permit any or all of the following:

1 full bright (“stuck on white”) pixel

1 full dark (“stuck off”) pixel

2 single or double bright or dark sub-pixels

3 to 5 “stuck on” or “stuck off” sub-pixels (depending on the number of each)

Class 2 panels permit any or all of the following:

2 full bright pixels

2 full dark pixels

5-10 single or double bright or dark sub-pixels (again, depending on the number of each; no more than 5 bright (“stuck on”) subpixels are permitted).

Class 3 panels permit any or all of the following:

5 full bright pixels

15 full dark pixels

50 single or double sub-pixels stuck on or off

(allowed pixed defects per 1 (one) million pixels in the TFT/LCD matrix)

As of 2010, most premium branded panel manufacturers specify their products as Class 0, expecting a small number of returns due to early failure where a particular item fails to meet Class 0 but would meet Class 1. Budget panel manufacturers tend to specify their products as Class 1[citation needed]. Most premium branded finished product manufacturers (retail TVs, monitors, Laptops, etc.) tend to specify their products as meeting Class 1 even when they have a Class 0 specified panel inside. Some premium branded finished product manufacturers have started to specify their products as Class 0 or offer a Class 0 guarantee for an additional premium.[6][7][8]

Part 1: (1997) Ergonomic requirements for office work with visual display terminals (VDTs) - General Introduction
This part introduces the multi-part standard ISO 9241 for the ergonomic requirements for the use of visual display terminals for office tasks and explains some of the basic underlying principles. It provides some guidance on how to use the standard and describes how conformance to parts of ISO 9241 should be reported.

Part 2: (1993) Guidance on task requirements
This part deals with the design of tasks and jobs involving work with visual display terminals. It provides guidance on how task requirements may be identified and specified within individual organisations and how task requirements can be incorporated into the system design and implementation process.

Part 3: (1993, deprecated) Visual display requirements
This part specifies the ergonomics requirements for display screens which ensure that they can be read comfortably, safely and efficiently to perform office tasks. Although it deals specifically with displays used in offices, it is appropriate to specify it for most applications that require general purpose displays to be used in an office-like environment.

Part 4: (1998) Keyboard requirements
This part specifies the ergonomics design characteristics of an alphanumeric keyboard which may be used comfortably, safely and efficiently to perform office tasks. Keyboard layouts are dealt with separately in various parts of ISO/IEC 9995: 1994 Information Processing - Keyboard Layouts for Text and Office Systems

Part 5: (1998) Workstation layout and postural requirements
This part specifies the ergonomics requirement for a Visual Display Terminal workplace which will allow the user to adopt a comfortable and efficient posture.

Part 6: (1999) Environmental requirements
This part specifies the ergonomics requirements for the Visual Display Terminal working environment which will provide the user with comfortable, safe and productive working conditions.

Part 7: (1998, deprecated) Display requirements with reflections
This part specifies methods of measurement of glare and reflections from the surface of display screens, including those with surface treatments.

Part 9: (2000) Requirements for non-keyboard input devices
This part specifies the ergonomics requirements for non-keyboard input devices which may be used in conjunction with a visual display terminal. It also includes a suggestion for a user-based performance test as an alternative way of showing conformance. The standard covers such devices as the mouse, trackball and other pointing devices, but it does not address voice input.

Part 10 (1996, withdrawn) "Dialogue principles":
Gives ergonomic principles formulated in general terms; they are presented without reference to situations of use, application, environment or technology. These principles are intended to be used in specifications, design and evaluation of dialogues for office work with visual display terminals (VDTs).[3]

Part 11: (1998) This part deals with the extent to which a product can be used by specified users to achieve specified goals with effectiveness (Task completion by users), efficiency (Task in time) and satisfaction (responded by user in term of experience) in a specified context of use (users, tasks, equipments & environments).

Part 12: (1998) Presentation of information
This part contains specific recommendations for presenting and representing information on visual displays. It includes guidance on ways of representing complex information using alphanumeric and graphical/symbolic codes, screen layout, and design as well as the use of windows.

Part 13: (1998) User guidance
This part provides recommendations for the design and evaluation of user guidance attributes of software user interfaces including Prompts, Feedback, Status, On-line Help and Error Management.

Part 15: (1998) Command language dialogues
This part provides recommendations for the ergonomic design of command languages used in user-computer dialogues. The recommendations cover command language structure and syntax, command representations, input and output considerations, and feedback and help.

Part 16: (1999) Direct manipulation dialogues
This part provides recommendations for the ergonomic design of direct manipulation dialogues, and includes the manipulation of objects, and the design of metaphors, objects and attributes. It covers those aspects of Graphical User Interfaces that are directly manipulated, and not covered by other parts of ISO 9241.

Part 17: (1998) Form-filling dialogues
This part provides recommendations for the ergonomic design of form filling dialogues. The recommendations cover form structure and output considerations, input considerations, and form navigation.